Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

error message: libsmime3.dylib is in use and will not allow update

  • 2 replies
  • 52 have this problem
  • 7 views
  • Last reply by Cheng Wang

more options

I tried to download the new firefox 5.0, for Mac OS10

when I put it into the application folder the error message showed up:

libsmime3.dylib is in use and would not allow new version to replace old

I have restarted the computer several times and still the same

I tried to download the new firefox 5.0, for Mac OS10 when I put it into the application folder the error message showed up: libsmime3.dylib is in use and would not allow new version to replace old I have restarted the computer several times and still the same

All Replies (2)

more options

I was able to fix this by uninstalling the previous version:

1. Go to Applications folder (Shift-Cmd-A) 2. Delete Mozilla Firefox application (Cmd-delete) 3. Now drag Firefox 5 into Applications folder.

Good luck!

more options

I found this blog post when trying to look up that error. Looks like a common cause of the error is programs like Evernote, Dropbox or Cisco's AnyConnect VPN Client. Try disabling those (the blog post has instructions) if a simple delete/replace doesn't help.